I haven't been yet and I've only paid off a little of mine since leaving uni. On Sandhurst grad salary, we pay off £63.56/month or £762.77 in that year. After tax and student loan we take home £1,436.90/month on the new September tax rates. Most average students have a loan in the region of £9k to pay back.... so one year at Sandhurst isn't a massive dent - leaves you with around £8237 left to pay.
On commission, pay goes up to £28,216.32. First year as a Subaltern sees £1,189.47 of student loan paid off which leaves £7k. Take home after tax and loan is at £1,673.95 so nice little pay rise there....! You get the idea? Obviously pay will go up again on promotion to Lt which covers levels 6-10 on the pay spine and at level 10 you are looking at 31,188.36 per annum which still only pays off in the region of £1,456.95 of your student loan (take home £1,822.55). Unless you put across say an extra £100 - £200/month, you are looking at around 7 years to pay off your loan. And extra £100/month sees off an added £1200/annum, which is quite a difference on how long it would take to pay it off.
I sat and worked this all out purely because I would like to get rid of it ASAP so I have more money incoming each month to save up for a decent car/house etc.[/boring post]
You can wake up now....!